source: buchla-68k/orig/lib/INCLUDE/IO.H@ 6888aa2

/*
   ============================================================================
        io.h -- Buchla 700 I/O library definitions
        Version 12 -- 1987-09-25 -- D.N. Lynx Crowe
   ============================================================================
*/

#include "fspars.h"             /* file system parameters */

struct channel {                /* channel table entry */

        char    c_read;         /* read routine index */
        char    c_write;        /* write routine index */
        char    c_ioctl;        /* ioctl routine index */
        char    c_seek;         /* seek routine index */
        int     (*c_close)();   /* close function pointer */
        io_arg  c_arg;          /* argument to channel driver */
};

struct device {                 /* device control structure */

        char    d_read;         /* read routine code */
        char    d_write;        /* write routine code */
        char    d_ioctl;        /* ioctl routine code */
        char    d_seek;         /* seek routine code */
        int     (*d_open)();    /* special open function */
};

struct devtabl {                /* device table entry */

        char    *d_name;        /* device name */
        struct  device  *d_dev; /* pointer to device structure */
        io_arg  d_arg;          /* argument to device driver */
};

#ifndef _FS_DEF_

extern  struct channel chantab[MAXCHAN];        /* defined in fsinit.c */
extern  char    Wrkbuf[BPSEC];                  /* defined in fsinit.c */

#endif